Working on a 2006 GTI, 1K0907115B ECU.

Car is a dedicated track vehicle, and has been converted to a fully aftermarket brake system without the factory ABS block in place.

No matter what I try I cannot get fueling to follow LAMFA or KFLBTS, no matter the throttle position or MAF flow. The Lambda target stays at 1.0.

Anyone have any experience with this kind of situation?